[xbuild] Add new reserved properties $(MSBuildThisFile*).
[mono.git] / mcs / class / Microsoft.Build.Engine / Microsoft.Build.BuildEngine / BuildChoose.cs
1 //
2 // BuildChoose.cs: Represents <Choose>.
3 //
4 // Author:
5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
6 // 
7 // (C) 2005 Marek Sieradzki
8 //
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
16 //
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
19 //
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27
28 #if NET_2_0
29
30 using System;
31 using System.Collections.Generic;
32 using System.Xml;
33
34 namespace Microsoft.Build.BuildEngine {
35         internal class BuildChoose {
36                 
37                 BuildWhen       otherwise;
38                 Project         project;
39                 ImportedProject importedProject;
40                 XmlElement      xmlElement;
41                 List <BuildWhen>        whens;
42                 
43                 public BuildChoose (XmlElement xmlElement, Project project)
44                         : this (xmlElement, project, null)
45                 {
46                 }
47
48                 internal BuildChoose (XmlElement xmlElement, Project project, ImportedProject importedProject)
49                 {
50                         this.xmlElement = xmlElement;
51                         this.project = project;
52                         this.importedProject = importedProject;
53                         this.whens = new List <BuildWhen> ();
54
55                         foreach (XmlNode xn in xmlElement.ChildNodes) {
56                                 if (!(xn is XmlElement))
57                                         continue;
58
59                                 XmlElement xe = (XmlElement)xn;
60
61                                 if (xe.Name == "When") {
62                                         if (otherwise != null)
63                                                 throw new InvalidProjectFileException ("The 'Otherwise' element must be last in a 'Choose' element.");
64                                         if (xe.Attributes.GetNamedItem ("Condition") == null)
65                                                 throw new InvalidProjectFileException ("The 'When' element requires a 'Condition' attribute.");
66                                         BuildWhen bw = new BuildWhen (xe, project);
67                                         whens.Add (bw);
68                                 } else if (xe.Name == "Otherwise") {
69                                         if (this.whens.Count == 0)
70                                                 throw new InvalidProjectFileException ("At least one 'When' element must occur in a 'Choose' element.");
71                                         
72                                         otherwise = new BuildWhen (xe, project);
73                                 }
74                         }
75
76                         DefinedInFileName = importedProject != null ? importedProject.FullFileName :
77                                                 project != null ? project.FullFileName : null;
78                 }
79                 
80                 public void Evaluate ()
81                 {
82                 }
83                 
84                 //public bool IsImported {
85                 //      get { return isImported; }
86                 //      set { isImported = value; }
87                 //}
88                 
89                 public BuildWhen Otherwise {
90                         get { return otherwise; }
91                         set { otherwise = value; }
92                 }
93                 
94                 public List <BuildWhen> Whens {
95                         get { return whens; }
96                         set { whens = value; }
97                 }
98
99                 internal string DefinedInFileName { get; private set; }
100         }
101 }
102
103 #endif